一个简单的 onmouseover-onmouseout 实例 - 在线编辑器

          <div onmouseover="mOver(this)" onmouseout="mOut(this)" style="background-color:#D94A38;width:120px;height:20px;padding:40px;">Mouse Over Me</div>
<script>
  function mOver(obj) {
    obj.innerHTML = "Thank You"
  }

  function mOut(obj) {
    obj.innerHTML = "Mouse Over Me"
  }
</script>
        